Submission #1209383

#	Time	Username	Problem	Language	Result	Execution time	Memory
1209383		simona1230	Comparing Plants (IOI20_plants)	C++20	44 / 100	464 ms	11368 KiB

plants

#include "plants.h"
#include <bits/stdc++.h>
#define pb push_back
using namespace std;

const int maxn=2*1e5+5;

struct node
{
    int vl,id,lz;
    node() {}
    node(int _vl,int _id,int _lz)
    {
        vl=_vl;
        id=_id;
        lz=_lz;
    }
};

node t[4*maxn];

node pull(node lf,node rt)
{
    node h=lf;
    if(lf.vl>rt.vl)h=rt;
    return h;
}

void push(int i,int l,int r)
{
    t[i].vl+=t[i].lz;
    if(l!=r)
    {
        t[i*2].lz+=t[i].lz;
        t[i*2+1].lz+=t[i].lz;
    }
    t[i].lz=0;
}

void updi(int i,int l,int r,int id,int vl)
{
    push(i,l,r);

    if(l==r)
    {
        t[i].vl=vl;
        t[i].id=l;
        return;
    }

    int m=(l+r)/2;
    push(i*2,l,m);
    push(i*2+1,m+1,r);
    if(id<=m)updi(i*2,l,m,id,vl);
    else updi(i*2+1,m+1,r,id,vl);

    t[i]=pull(t[i*2],t[i*2+1]);
}

void updr(int i,int l,int r,int ql,int qr)
{
    push(i,l,r);
    if(ql>qr)return;
    if(ql<=l&&r<=qr)
    {
        t[i].lz-=1;
        push(i,l,r);
        return;
    }

    int m=(l+r)/2;
    updr(i*2,l,m,ql,min(qr,m));
    updr(i*2+1,m+1,r,max(m+1,ql),qr);

    t[i]=pull(t[i*2],t[i*2+1]);
}

node query(int i,int l,int r,int ql,int qr)
{
    push(i,l,r);
    if(ql>qr)return {maxn,0,0};
    if(ql<=l&&r<=qr)return t[i];
    int m=(l+r)/2;
    return pull(query(i*2,l,m,ql,min(qr,m)),query(i*2+1,m+1,r,max(m+1,ql),qr));
}

int g[maxn];
int sz,num;

void init(int k, std::vector<int> r)
{
    num=r.size();
    sz=r.size();
    for(int i=0; i<r.size(); i++)
        updi(1,0,sz-1,i,r[i]);

    while(1)
    {
        stack<int> s;
        node x=query(1,0,sz-1,0,sz-1);

        if(x.vl!=0)break;

        s.push(x.id);
        while(s.size())
        {
            int y=s.top();
            node z=query(1,0,sz-1,max(0,y-k+1),y-1);
            if(y-k+1<0)z=pull(z,query(1,0,sz-1,sz+(y-k+1),sz-1));
            if(z.vl==0)s.push(z.id);
            else
            {
                g[y]=num--;
                updr(1,0,sz-1,max(0,y-k+1),y-1);
                if(y-k+1<0)
                    updr(1,0,sz-1,sz+(y-k+1),sz-1);

                updi(1,0,sz-1,y,maxn);
                s.pop();
            }
        }
    }

    /*for(int i=0;i<r.size();i++)
        cout<<g[i]<<" ";
    cout<<endl;*/
}

int compare_plants(int x, int y)
{
    if(g[x]<g[y])return -1;
    return 1;
}

• Subtask 1: 0 / 5
• Subtask 2: 14 / 14
• Subtask 3: 13 / 13
• Subtask 4: 17 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25